[RESOLVED] call JQuery from ASP.net Button Click

[avrail]

hay there,
i am new to JQuery,
so i wounder if there is a way to call JQuery method after button click from server side event,

here is what i really try to do,
the user will click on the login Button, and i will check his login name and his user name on the server side,
then i will call the JQuery function to execute slideToggle for a Div

is there a way to do such a thing

here is my JQuery function

function LoginError() {
$(document).ready(function() {
        $("LoginButton").click(function() {
            $(".DivError").slideToggle("slow");
            return false;
        });
    });
}

bool loginFlag = false;

if(!loginFlag){
this.Page.ClientScript.RegisterStartupScript(this.Page.GetType(),
            "startup", "<script type=\"text/javascript\">LoginError();</script>");
}

but there is nothing happened,
i think i am missing something
thanks alot.